117869513 has 2 divisors, whose sum is σ = 117869514. Its totient is φ = 117869512.

The previous prime is 117869497. The next prime is 117869519. The reversal of 117869513 is 315968711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117332224 + 537289 = 10832^2 + 733^2 .

It is an emirp because it is prime and its reverse (315968711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117869513 - 2⁴ = 117869497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117869519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58934756 + 58934757.

It is an arithmetic number, because the mean of its divisors is an integer number (58934757).

Almost surely, 2^117869513 is an apocalyptic number.

It is an amenable number.

117869513 is a deficient number, since it is larger than the sum of its proper divisors (1).

117869513 is an equidigital number, since it uses as much as digits as its factorization.

117869513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 117869513 is about 10856.7726788397. The cubic root of 117869513 is about 490.3059494265.

The spelling of 117869513 in words is "one hundred seventeen million, eight hundred sixty-nine thousand, five hundred thirteen".